ru-cu 2 o Wrapped cu nanowires and its preparation method and application

A technology of ru-cu2o and nanowires, applied in chemical instruments and methods, chemical/physical processes, light water/sewage treatment, etc., can solve difficult problems such as preparation, and achieve simple and easy operation methods, good application value, and comparative The effect of large surface area

Active Publication Date: 2019-09-03
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For current Cu 2 O-Cu is a shortcoming that the semiconductor-metal structure is difficult to prepare. The present invention proposes to prepare Cu by in-situ oxidation of Cu nanowires. 2 O, again in Cu 2 The method of doping rare metals on the O@Cu body is simple and convenient, and can use the Schottky barrier of the semiconductor-metal structure and metal doping to improve the photocatalytic efficiency of cuprous oxide

Method used

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  • ru-cu <sub>2</sub> o Wrapped cu nanowires and its preparation method and application
  • ru-cu <sub>2</sub> o Wrapped cu nanowires and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Preparation of Ru-Cu 2 O wrapped Cu nanowires

[0031] Add 120 mg of copper nanowires and 200 mL of deionized water to a round-bottomed flask, react in a water bath at 70°C for 6 hours, then cool to room temperature, filter, wash the filter cake with absolute ethanol and distilled water several times, and dry it in vacuo. Cu with a core-shell structure with an outer shell of a certain thickness 2 O is a nanowire with Cu as the core. Prepared Cu 2 Put 60 mg of nanowires with O as the shell and Cu as the core in a small beaker, slowly add 0.63 mL (38.2% by mass fraction) of ruthenium trichloride solution into the beaker, and let the mixture stand for 30 seconds after 1 min of dripping , the solution changed from the previous light yellow to light gray, and the precipitate was separated by centrifugation, washed several times with absolute ethanol and deionized water, and dried to obtain Ru-Cu with a mass fraction of Ru doped at 2%. 2 O wrapped Cu nanowires.

[0032] ...

Embodiment 2

[0034] Preparation of Ru-Cu 2 O wrapped Cu nanowires

[0035] Add 120 mg of copper nanowires and 200 mL of deionized water to a round-bottomed flask, react in a water bath at 70°C for 6 hours, then cool to room temperature, filter, wash the filter cake with absolute ethanol and distilled water several times, and dry it in vacuo. Cu with a core-shell structure with an outer shell of a certain thickness 2 O is a nanowire with Cu as the core. Prepared Cu 2 Put 60 mg of nanowires with O as the shell and Cu as the core in a small beaker, slowly add 1.26 mL (mass fraction of 38.2%) ruthenium trichloride solution into the beaker, and let the mixture stand for 30 seconds after 1 min of dripping , the solution changed from light yellow to light gray before, and the precipitate was separated by centrifugation, washed several times with absolute ethanol and deionized water, and dried to obtain Ru-Cu with a mass fraction of 4% Ru doped 2 O wrapped Cu nanowires.

Embodiment 3

[0037] Preparation of Ru-Cu 2 O wrapped Cu nanowires

[0038] Add 120 mg of copper nanowires and 200 mL of deionized water to a round-bottomed flask, react in a water bath at 70°C for 6 hours, then cool to room temperature, filter, wash the filter cake with absolute ethanol and distilled water several times, and dry it in vacuo. Cu with a core-shell structure with an outer shell of a certain thickness 2 O is a nanowire with Cu as the core. Prepared Cu 2 Put 60 mg of nanowires with O as the shell and Cu as the core in a small beaker, slowly add 1.5 mL (mass fraction of 38.2%) ruthenium trichloride solution into the beaker, and let the mixture stand for 30 seconds after 1 min of dripping , the solution changed from the previous light yellow to light gray, and the precipitate was separated by centrifugation, washed several times with absolute ethanol and deionized water, and dried to obtain Ru-Cu with a mass fraction of 5% Ru doped 2 O wrapped Cu nanowires.

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Abstract

The invention provides a Ru-Cu2O covered Cu nanowire. A preparation method of the Ru-Cu2O covered Cu nanowire comprises the following steps: mixing a copper nanowire and de-ionized water; reacting at 60 DEG C-80 DEG C for 5h-7h; cooling to a room temperature; filtering and washing; drying in vacuum to prepare a nanowire which takes Cu2O as a shell and Cu as a core; at the room temperature, dropwise adding a ruthenium trichloride solution into the nanowire which takes the Cu2O as the shell and the Cu as the core; after dropwise adding, standing for 25s-30s; centrifuging and washing sediment; and drying the sediment to obtain a final product. The Ru-Cu2O covered Cu nanowire prepared by the invention can be applied to a reaction of degrading organic pollutants in dyestuff wastewater by photocatalysis and the photocatalysis efficiency is high.

Description

[0001] (1) Technical field [0002] The present invention relates to a kind of Ru-Cu 2 O-wrapped Cu nanowires and its preparation method and application. [0003] (2) Background technology [0004] Since the 1970s, photocatalytic technology has attracted widespread attention in the treatment of dye wastewater, but the traditional photocatalyst TiO 2 The energy band is too narrow, and the utilization rate of sunlight is too low. Cu 2 As a non-toxic, P-type semiconductor material with special optical properties, O has a band gap between 2 and 2.2 eV. Compared with common catalysts, O has the advantage of absorbing most of the visible light. Chemistry has a good application prospect. But Cu 2 O is unstable, and the photogenerated electron-holes formed by it also have the disadvantage of easy recombination, so the research on its modification has become a research hotspot, among which the more popular ones are heterojunction, metal doping and non-metal doping. [0005] (3) Co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89C02F1/30
CPCC02F1/30B01J23/8926C02F2101/308B01J35/39
Inventor 黄新文凌姝琪刘宗健
Owner ZHEJIANG UNIV OF TECH
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